title: [Ecological risk evaluation of heavy metals of the typical dredged mud in Shanghai].
abstract: In order to discuss the potential ecological risk of heavy metals of the typical dredged mud in Shanghai, the Hakanson potential ecological risks method was used to analyse and assess the potential ecological risks of heavy metals, including Hg, Cd, Cu, Pb, As,Cr and Zn in dredged mud from the following three areas-the dock apron of Huangpu River, the mouth of the Yangtze River and inland waterways. The results showed that the mean values of ecological risk index (Er(i)) of the seven heavy metals are 20.05, 17.49, 8.82, 5.71, 4.68, 1.74 and 1.13, respectively, all of which belonged to the low ecological risk; Cd (one location in inland waterways) and Hg (three locations in the mouth of the Yangtze River and one location in inland waterways) are the most hazardous elements, with the Er(i) > 40, which belonged to the medium ecological risk or the high ecological risk, and other elements belonged to the low ecological risk. From the results of ecological risk indices(ERI) of the heavy metals in Shanghai dredged mud, the risk of the heavy metals belonged to the low ecological risk. The ERI of inland waterways, the mouth of the Yangtze River and the dock apron of the Huangpu River were 81.4, 57.7 and 52.5, respectively, which all belong to the low ecological risk.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China. tangqingli_116@126.com
authors.forename: Qing-Li
authors.initials: QL
authors.lastname: Tang
authors.forename: Jin-Ping
authors.initials: JP
authors.lastname: Cheng
authors.forename: Hao-Min
authors.initials: HM
authors.lastname: Gao
authors.forename: Lei
authors.initials: L
authors.lastname: Yao
authors.forename: Zhen-Yi
authors.initials: ZY
authors.lastname: Jiang
authors.forename: Yang
authors.initials: Y
authors.lastname: Wu
authors.forename: Cui-Song
authors.initials: CS
authors.lastname: Xie
authors.forename: Hai
authors.initials: H
authors.lastname: Liang
authors.forename: He
authors.initials: H
authors.lastname: Wang
authors.forename: Shuai-Shuai
authors.initials: SS
authors.lastname: Pi
authors.forename: Zhao-Yi
authors.initials: ZY
authors.lastname: Yu
mesh_terms: D002681:China; D002947:Cities; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods; D019015:Geologic Sediments / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis*; D009792:Oceans and Seas; D018570:Risk Assessment; D012623:Seawater / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical